Re: CStatic::SetIcon Transparent.

From:
=?Utf-8?B?UGFyZXNo?= <Paresh@discussions.microsoft.com>
Newsgroups:
microsoft.public.vc.mfc
Date:
Tue, 22 Apr 2008 05:19:02 -0700
Message-ID:
<FF559638-2958-4853-9AB5-CB63184EF843@microsoft.com>
But dialog background is painted with Gradient Color. And, I am expecting
this gradient as to be background for CStatic.

class CMyDialog : public CDialog
{
 ........
 CStatic m_StaticIcon;
 ........
}

HBRUSH CMyDialog:nCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor)
{
 HBRUSH hbr = CDialog:nCtlColor(pDC, pWnd, nCtlColor);
 
 switch(nCtlColor)
 {
 case CTLCOLOR_STATIC:
  if (pWnd->m_hWnd == m_StaticIcon.m_hWnd)
  {
   pDC->SetBkMode(TRANSPARENT);
   return (HBRUSH)(GetStockObject(NULL_BRUSH));
  }
  break;
 }
 return hbr;
}

BOOL CMyDialog:nInitDialog()
{
 .........
 m_StaticIcon.Create(_T(""), WS_CHILD | WS_VISIBLE | SS_ICON,
        CRect(0, 0, 0, 0), this);

 HICON hIcon = ::LoadIcon(AfxGetResourceHandle(), MAKEINTRESOURCE(ICON_ID));
 m_StaticIcon.SetIcon(hIcon);
 .........
}

 

 

In CMyDialog:nPaint(), I have painted a region of CDialog with
GradientFill(...), and on this area I want a static icon, which needs to be
transparent. So that I can see the background of CStatic icon as gradient.

 

Regards,

Paresh.

"foobar" wrote:

I think removing

 switch(nCtlColor)
 {
 case CTLCOLOR_STATIC:
  if (pWnd->m_hWnd == m_StaticIcon.m_hWnd)
  {
   pDC->SetBkMode(TRANSPARENT);
   return (HBRUSH)(GetStockObject(NULL_BRUSH));
  }
  break;
 }

from your OnCtlColor function helps in showing the background that you
want.

On Apr 22, 4:54 pm, Paresh <Par...@discussions.microsoft.com> wrote:

Yes, it shows correctly. But the rest area of the icon, (which should be
transparent) is painted with black color.

Regards,
Paresh.

"foobar" wrote:

Does the icon show up if you don't use transparent style?

On Apr 22, 4:32 pm, Paresh <Par...@discussions.microsoft.com> wrote:

No Success :(.

Regards,
Paresh.

"somefoo...@gmail.com" wrote:

I have two suggestions

1. You don't need to set transparent style each time OnCtlColor method
gets exectued. Instead use WS_EX_TRANSPARENT while creating the
CStatic window . You need to use CreateEx method to set this style at
the time of window creation.

2. I see CRect(0, 0, 0, 0) in the parameter list of Create method. Did
you try setting correct rectangle values?

On Apr 22, 1:51 pm, Paresh <Par...@discussions.microsoft.com> wrote:

class CMyDialog : public CDialog
{
 ........
 CStatic m_StaticIcon;
 ........

}

HBRUSH CMyDialog:nCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor)
{
 HBRUSH hbr = CDialog:nCtlColor(pDC, pWnd, nCtlColor);

 switch(nCtlColor)
 {
 case CTLCOLOR_STATIC:
  if (pWnd->m_hWnd == m_StaticIcon.m_hWnd)
  {
   pDC->SetBkMode(TRANSPARENT);
   return (HBRUSH)(GetStockObject(NULL_BRUSH));
  }
  break;
 }
 return hbr;

}

BOOL CMyDialog:nInitDialog()
{
 .........
 m_StaticIcon.Create(_T(""), WS_CHILD | WS_VISIBLE | SS_ICON,
        CRect(0, 0, 0, 0), this);

 HICON hIcon = ::LoadIcon(AfxGetResourceHandle(), MAKEINTRESOURCE(ICON_ID));
 m_StaticIcon.SetIcon(hIcon);
 .........

}

In CMyDialog:nPaint(), I have painted a region of CDialog with
GradientFill(...), and on this area I want a static icon, which needs to be
transparent. So that I can see the background of CStatic icon as gradient.

Regards,

Paresh.

"somefoo...@gmail.com" wrote:

Can you paste the code that you have? That should help in identifying
the problem.

On Apr 22, 11:34 am, Paresh <Par...@discussions.microsoft.com> wrote:

Hi,

I am using the API CStatic::SetIcon to associate the icon with the static
control. I have placed this control on CDialog, (Dialog background is
gradient painted). I want this CStatic control to be transparent (so that the
background of CStatic would be gradient, which is of Dialogs background
color). However, icon image is transparent. How could I do this ?

Any help would be highly appreciated.

Thanks,
Paresh.

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